accountable vs definable

accountable

adj
  • Capable of being accounted for; explicable; explainable. 

  • Obliged, when called upon, to answer (for one’s deeds); answerable. 

  • Liable to be called on to render an account. 

  • Obliged to keep accurate records (of property or funds). 

definable

adj
  • Able to be defined. 

  • Many words are definable by using other words. 

How often have the words accountable and definable occurred in a corpus of books? (source: Google Ngram Viewer )